"I was walking down here and I saw it and I thought it was pretty. Actually, I did not, however... until just now... realize what it was about, that it was about the students who were shot and that gives it more power to know that," said Laura Sydell, who lives in San Francisco."

It's not just in San Francisco. There was a vigil outside San Ramon City Hall Monday night, honoring the victims and advocating for gun control.

"It's great that this has spread to San Francisco and people around are kind of taking notice and doing what they can. There are so many people at this park, so many families and what's happened has touched people everywhere and it should be remembered," said Jess Nam, who lives in San Francisco.